Features: new and high quality It is suitable for spot welding between nickel strip, nickel infiltrated steel strip, galvanized steel strip and other materials. In the production of Ni MH battery, Ni Cr battery, polymer battery, lithium battery and other batteries, spot weld the connecting piece, cell and lead out piece. The spot welding tip is aluminum oxide copper spot welding needle. Spot welding needle lenght is 50mm ,diameter is 3mm. Double end processing, wear resistance and long service time. Material:Copper Package Includes: 2 Pieces 18650 Spot Welder Welding Needle Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.